Ventilating millstowes



S. ,G. MORRISON.

Millstone Exhaust 7 No. 32.579. I Patented J'une'18, 1861.

N PETERS. Pholoiimographun Washingion, D4 C SAMUEL G. MORRISON, OF VILLIAMSPORT, PENNSYLX ANIA.

VENTILATING MILLS'IONES.

Specification of Letters Patent No. 32,579, dated June 18, 1861.

To all whom it may concern:

Be it known that I, SAMUEL G. MORRISON, of the borough of lVilliamsport, in the county of Lycoming and State of Pennsyl Vania, have invented a new and useful attachment to the curbs of the bur-stones of fiouring-mills for the purpose of ventilating the bur and removing the Hour from the same; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a perspective View of my improveinent as attached to the curb. Fig. 2 is a longitudinal section of the same as attached to the curb, and Fig. 3 is aplan view of my attachment separated from the curb, in all of which figures the same letter so often it occurs refers to the same part.

A represents the curb made in any desired form. 13 the opening in the center of the curb to admitthe grain. C a pipe fitting around the burs and connected with the curb with the lower side on a level with the top of the lower bur. D openings in the pipe 0 allowing a passage from the burs to the pipe C and thence through the throat F to the fan blower E and discharge pipe G.

H is a flange attached to the curb and fitting the eye of the bur stone.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

After constructing my attachment as before describedI drive the fan blower E in such direction as to cause a current of air to be drawn and enter with the grain through B and thence pass with the grain SAMUEL G. MORRISON.

itnesses J. A. MONTGOMERY, CI-rAs. T. I-IUsToN. 

